Corectly convert from %PATH%=c:\\X; "c:\\a; b" TO ['c:\\X', 'c:\\a; b']

[Chirayu Krishnappa]

Its good to see what cpython did with the PATH. I now feel good about
taking the simple approach. It would be crazy if that sort of quoting
in the middle becomes something which works with too many applications
- and others are expected to keep up with it.

I guess I dont need to worry about unix PATHs now. 

Thanks,
Chirayu.